Knob lock



' E. VBEST Sept l, 1925 KNOB LOCK Filed May 31, 192:

Julian/1h Patented Sept. 1, 1925.

UNITED STATES FRANK nLLIson BEsT, or srji'ArrLa, Hammett, l g timate Basia; fig or SEATTLE, wesnrnerorr, a conronarrron or WASHINGTON.

KNOB LOCK.

Application filed May 31, 1923. Serial No. 642,567;

To all whom it may concern.

Be it known that I, FRANK ELLIsoN B-rsr, a citizen of theUnited States, residing at Seattle, in the county of King and Stateof \iVashington, have invented a new and useful Knob Look, of which the following is a specification. x

My invention relates to improvements in knob locks of the form in wliich'a lock is provided within a door knob. The 0b ect of my. invention is to provide, aknob lock wherein the lock mechanism isncontained within a lock' housing on which a separable knob of any desired shape, sizeor construction may be secured thus making it possible in the manufacture of knob locks to use the same lock housing and lock mechanism. 1n a great many different styles and types of locks. p p v Another object of the invention is to provide a knoblock construction in whicheither glass knob or a metal knob maybe used, the lock housing being shaped so that a separate knob member maybe quickly and easily placed thereon and securely held against't-urning or removal; p

Another object is to provide a knob lock structure that is-strong, simple and compact in construction, not expensive to manufac ture and easy to assemble.

Other and'mor'e specific objects wilhbe apparent from the following description taken in connection with the accompanying drawings. A

In the drawings Fig. 1 is a view in end elevation of a knob lock constructed in accordan e with my invention.

Fig. 2 is a view in longitudinal medial section of the knob lock, only one knob being shown.

Fig. 3 is a sectional view of the same, the plane of section being at right angles to that of Fig. 2.

Fig. 4 is a detached view inside elevation of the lock housing.

Figs. 5 and 6 are end elevations of the outer and inner ends of said lock housing respectively. g I

Figs. 7, 8 and 9 are fragmentary sectional views illustrating adaptations of metal knobs to this knob lock construction.

Like reference numerals designate like parts throughout the several views.

Referrin to the drawings I have shown a combined lock housing and knob shank which correspondingly shaped shoulders 15 of a knob member 16 are arranged to engage; Theshoulders 15 of theknob memberare formed by providing inwardly protruding flanges. 17 at theinner endio f anaizi al} sageway in the knob, said passageway tang of the proper diameter to snugly fit the larger end 11 of the Shank-. H

The larger end 11 of the shank is provided with a recess 18 of subs tantiall y figure 8. cross sectional shape torith'e' reception of a pin tumbler lockcore 19 that maybe operatively connected as by pin 2O "and lever 21- withraubolt. 22 that iserota't'ably disposed in a bore 23 in the smaller end portion 10 of the. shank, the arrangement being such that the rotation of-the bolt 22 is controlled'by a key in the lock; core 19. Any suitable locking means m'a y 'loe connected with the bolt/22 the same forming-no part. of the invention and" not being shown, in the drawings. I In assembling, the knob 1:6 is sli ppedover the small end of the shank and moved toward the larger end thereo t' unti l the shoulders .15 and flattened portions ot'the flanges 17 of the knob'fit the corresponding shot-11 ders-. 14 and flattened: portions 13 'Q f the; shank and a collar 24 is then pressed onto the smaller end of theshank tightly against the shoulders 12 and smaller end of the knob thereby firmlysecuring said knob in a permanent position on the shank. 'Ihe flange portion 1'7" of the knob is dimensioned so that it will just fill the space between the shoulders 12 and '14 thus permitting the collar 2tto come in contact with the end or the: knob when it is forced against the shoulders 12. I When transparent glass knobs are-used a cement ot the proper color may be inserted between the knob and? the, shank atthe time these devices are assembled to prevent the metallicshank from having a deadening or discoloring effect on the knob. v 1 The invention is particularly advantageous'as applied to glass knob locks, in that it provides an exceptionally strong and substantial knob construction and one in which there are no thin or fragile glass parts on the knob to break off.

In Fig. 7 I have shown a metal knob 25 of hollow or. shell-like construction that is adapted to be used on the shank hereinbefore explained instead of the glass knob 16. The knob 25 is provided at its inner end with rearwardly bent: flat members 26 that lit against the flat surfaces 13 of the shank and abut against the shoulders 14, the collar 24 serving to secure the knob 25 on the shank in a manner already explained.

Fig. 8 shows a metalknob 27-of hollow construction in which separable spacing means 28, which may be in the formof a metal collar is used between the shoulders 14 and the end 29 of the knob. In this construction the opening at the end 29 of the knob is flattened to fit the flat surfaces 13 on the shank and such end 29 is securely clamped between the spacers 28 and collar 24. p

The structures shown in both Figs. 7 and 8 permit the use of the same shank in connection with a metal knob that is used in connection with the glass knob.

In Fig. 9 I have shown a hollow knob 30 applied to a shank 31 in which the flattened portions 12 are shortened until they are of a.

width onlysubstantially equalto the thickness ofthe metal from which theknob 30 is made and serve to receive the flattened end portions 32 of the knob which are held between shoulders 33 anda retaining collar 34 which corresponds to the collar 24. The metal knobs of Figs. 7, 8 and 9 are put on the shank in the same manner as the glass knob in assembling.

The construction above described is particularly advantageous as applied to glass knob locks in which pin tumblerlock mechanism is used because it'makes possible the use of a relatively large lock housing and at the same time permits the use of a glass knob large and substantial enough to afford sufficient strength to withstand all ordinary use. a

The foregoing description and accompanying drawings clearly disclose what I now consider to be apreferred form of the invention but it will be understood that this disclosure is merely illustrative,and that such changes may be resorted to as are within the scope and spirit of the following claims.

I I claim 1. A knob of the class described embody ing a shank having a flattened external surface and a separable knob membe arranged to fit onto said shank and having a flattened internal surface arranged to fit the flattened external surface on said shank. 2. A knob of the class described embody-- ing a shank havng flattened external surfaces, a separable knob member having. flattened surfaces arranged to fit the flattened surfaces on said shank, and means for securing said knob on said shank.

3. A knob of the class described, embodying a shank having a larger cylindrical outer end portion and a smaller cylindrical inner end portion said larger outer end portion having flattened external surfaces extending throughout a portion of its length and forming shoulders, a separable knob arranged to fit over said shank and having flattened internal flange portions arranged to fit over the flattened surfaces and rest against the shoulders on said larger shank portion and a collar securing said knob on said shank.

4. A knob of the class described, embodying a tubular shank consisting of a larger cylindrical portion at one end and a smaller cylindrical portion at the other end said two portions forming a shoulder at their junction with each other saidularger portion being flattened on two opposite sides for a distance rearwardly from said first named shoulder to form other shoulders and said enlarged portion being internally recessed, a glass knob arranged to fit over said enlarged portion and having inwardly directed flattened flange portions arranged to fit the flattened sides of said enlarged portion and a collar arranged to fit over the smaller end portion of said shank and engage said first named shoulder and said knob to secure said knob to said shank.

5. A knob of the class described, embodying a tubular shank composed of a larger cylindrical outer end portion and a smaller cylindrical inner end portion that form a shoulder at their junction, said larger outer end portion being flattened for a distance rearwardly from said shoulder to form other shoulders, a glass knob having a recess extending therethrough, said recess being cylindrical at the outer end and having inwardly protruding flange portions of segmental shape flattened to fit the flattened surfaces on said shank and forming shoulders arranged to fit against the shoulders on the larger portion of said shank and a collar arranged to fit over said shank and be secured thereto to clamp the segmental flanges of said knob securely against said shoulders on said shank.

FRANK ELLISON BEST. 

